Wind Loads on a Barrel Vaulted Walkway Canopy
Wind Loads on a Barrel Vaulted Walkway Canopy
(OP)
Does anyone know a good procedure using ASCE 7-05 to follow on determining wind loads on a barrel vaulted walkway canopy? The canopy is a main entrance canopy approximately 85 feet long and about 20 feet wide in its cross section. The apex of the curved is about 4' from flat. The total approx. height from the ground is about 22'. I just need design procedure using the formulas (i.e. not having to resort to wind testing) on a free standing barrel vaulted canopy detached from the main building. I realize that ASCE 7-05 does have provisions in figures 6-18a to 6-18d on free roofs but it seems not to cover barrel vaulted structures. Thanks.






RE: Wind Loads on a Barrel Vaulted Walkway Canopy
RE: Wind Loads on a Barrel Vaulted Walkway Canopy
RE: Wind Loads on a Barrel Vaulted Walkway Canopy
RE: Wind Loads on a Barrel Vaulted Walkway Canopy
RE: Wind Loads on a Barrel Vaulted Walkway Canopy
The short answer of how to incorporate wind on open structures into load combinations is to use each wind case ( in each load combination including wind... which effectively multiplies the number of total load combinations by ~3.
After a few projects with open structures you can identify by inspection the worst case "inward" wind pressure case and the worst case "outward" pressure case for the element your are designing/analyzing for. Then include the most "inward" pressure wind case to the "downforce" critical load combinations (those combinations using D (ASD) or 1.2D (Strength)) then use the most "outward" pressure wind case with the "uplift/overturning" critical load combinations (those combinations using .6D (ASD) or .9D (Strength).
RE: Wind Loads on a Barrel Vaulted Walkway Canopy
old CA SE